Research on the field strength characteristics and the flammable area of refrigerants leakage into a confined space

Li, Yalun; Yang, Jia‐Liang; Wu, Xilei; Liu, Ying; Zhou, Peixu; Yan, Yaohua; Han, Xiaoxiang

doi:10.1016/j.ijrefrig.2023.05.015

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Beberapa freon yang digunakan dalam sistem pendingin memiliki tingkat mudah terbakar yang berbeda-beda. Jika zat pendingin yang mudah terbakar bocor ke ruang terbatas, maka akan mudah menimbulkan bahaya keselamatan [7]. Tahap pemeriksaan kebocoran instalasi yaitu (a) Instalasi diisi dengan gas inert seperti nitrogen, (b) kebocoran bisa dipantau dengan alat ukur tekanan, (c) bila bocor perlu dicari titik kebocoran, (d) bila sudah tidak bocor, freon baru diisikan, (e) terakhir setelah freon diisikan perlu cek kebocoran menggunakan leaking detector.…”

Section: Pendahuluanunclassified

Pelatihan Keselamatan Bahan Gas Berbahaya Untuk Teknisi Mesin Pendingin

Nurcahyo,

Heraldy,

Nugrahaningtyas

et al. 2024

Jurnal Pengabdian Masyarakat Indonesia

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Pelatihan keselamatan bahan gas berbahaya untuk teknisi mesin pending telah dilaksanakan untuk teknisi mesin pendingin yang tergabung dalam paguyuban Aneka Jasa Teknik Surakarta (AJTS). Kecelakaan kerja berkaitan dengan gas freon banyak diberitakan di dunia maya. Paguyuban AJTS merupakan perkumpulan dari teknisi yang banyak berkecimpung sebagai teknisi mesin pendingin terutama AC, kulkas, dan freezer di Solo Raya. Pelatihan ini penting untuk dilakukan untuk membekali teknisi tersebut agar selamat dalam perakitan dan perbaikan mesin pendingin. Pelatihan ini dilaksanakan secara luring meliputi ceramah keselamatan bahan, praktek mengenal MSDS, dan praktek mendeteksi kebocoran gas freon menggunakan alat leaking detektor. Hasil pelatihan antara lain: peserta paham tentang bahaya gas freon dan pencegahan kecelakaan kerja dalam penanganan mesin pendingin. Pelatihan sangat bermanfaat bagi teknisi mesin pendingin terutama peserta pelatihan dan pembaca artikel ini, sehingga keselamatan kerja dapat tercapai.

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Section: Pendahuluanunclassified

Pelatihan Keselamatan Bahan Gas Berbahaya Untuk Teknisi Mesin Pendingin

Nurcahyo,

Heraldy,

Nugrahaningtyas

et al. 2024

Jurnal Pengabdian Masyarakat Indonesia

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“…Consequences: The "ignition occurs" branch further divides into potential consequences [47,48]. These consequences may include fire suppression efforts, evacuation procedures, medical assistance, and damage control measures to limit the impact of the fire or explosion.…”

Section: Hydrogen Leak Event Tree In the Confined Spacesmentioning

confidence: 99%

The Effect of Ventilation on the Hazards of Hydrogen Release in Enclosed Areas of Hydrogen-Fueled Ship

Ryu,

Duong,

Kim

et al. 2023

JMSE

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This paper presents a systematic investigation that encompasses the safety assessment of a fuel preparation room (FPR) intended for a hydrogen-fueled ship. The primary objective is to determine the appropriate ventilation strategy to mitigate the risks associated with potential hydrogen leakage. The study focuses on a case involving an FPR measuring 10.2 m × 5.3 m × 2.65 m, which is part of a 750 DWT hydrogen-powered fishing vessel. To identify the potential events leading to hydrogen dispersion, an event tree analysis is conducted. Additionally, existing regulations and guidelines related to the safety assessments of hydrogen leakage in enclosed areas are summarized and analyzed. Computational fluid dynamics, FLACS-CFD, are utilized for the consequence analysis in order to evaluate the impact of ventilation on hydrogen dispersion and concentration within the FPR. The research findings indicate significant effects of ventilation on the hazards and safety assessments of FPRs and high-pressure fuel gas supply systems. The study highlights that hydrogen vapor tends to accumulate at the ceiling and in the corners and spaces created by the equipment. The position and size of ventilation openings greatly influence the dispersion of hydrogen leakage. Proper ventilation design, including top inlet ventilation and outlet ventilation on the opposite side, helps to maintain a safe FPR by facilitating the efficient dispersion of hydrogen vapor. Moreover, locating inlet ventilation on the same side as the outlet ventilation is found to hinder dispersion, while the cross-ventilation achieved by placing inlets and outlets on opposite sides enhances airflow and dispersion. Consequently, it is recommended to prioritize the structural design of FPRs and implement enhanced safety measures. Additionally, updating the relevant regulations to address these concerns is strongly advised.

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